KR940017455A - Atm 다중화 처리 장치 - Google Patents

Atm 다중화 처리 장치 Download PDF

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KR940017455A
KR940017455A KR1019920026122A KR920026122A KR940017455A KR 940017455 A KR940017455 A KR 940017455A KR 1019920026122 A KR1019920026122 A KR 1019920026122A KR 920026122 A KR920026122 A KR 920026122A KR 940017455 A KR940017455 A KR 940017455A
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header
cell
input
signal
atm
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KR960003505B1 (ko
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김경수
김협종
최문기
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양승택
재단법인 한국전자통신연구소
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Priority to KR1019920026122A priority Critical patent/KR960003505B1/ko
Priority to US08/173,181 priority patent/US5446738A/en
Priority to JP5352755A priority patent/JPH06268665A/ja
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/24—Time-division multiplex systems in which the allocation is indicated by an address the different channels being transmitted sequentially
    • H04J3/247—ATM or packet multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2365—Multiplexing of several video streams
    • H04N21/23655—Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64307—ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity
    • H04L2012/5651—Priority, marking, classes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5672—Multiplexing, e.g. coding, scrambling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
    • H04L2012/5679—Arbitration or scheduling

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

본 발명은 광대역 종합정보통신망(B-ISDN)의 구성요소인 ATM(Asynchronous Transfer Mode) 망노드, 망종단 장치 및 단말 접속 장치 등에 공통으로 사용될 수 있는 ATM 다중화 처리 장치에 관한 것이다.
본 발명은 입력단에 존재하여 입력단에 들어오는 각 셀을 저장하는 기능과 셀의 일시적인 변위를 흡수, 제거하는 다수의 ATM 셀 입력수단(a)과 ATM 셀입력회로부(a)로부터 FRKR 입력버퍼(a2)에 저장된 셀의 갯수에 대한 저장레벨정보를 동시에 받아 각 입력버퍼에 송신 위해 대기중인 셀이 많은 입력단부로부터 송신을 결정하는 우선순위 엔코더(d)와, 상기 우선순위엔코더(d)로부터 보내온 셀의 헤더와 그 헤더가 속하는 입력포트번호를 가지고 변환 헤드를 출력으로 발생하는 연결테이블처리수단(e)과, 상기 연결테이블처리수단(e)으로부터 받은 변환헤더와 해당 연결정보를 보고 서비스 우선처리 순위에 따라 송신 순서를 정하며 완전한 셀을 만들기 위한 헤더 어셈블링 기능을 수행하는 ATM 셀 출력수단(f)과, 상기 ATM 셀 출력수단(f)에서 생성된 헤더를 송신하고, 해당 페이로드를 송신제어하며 상기 각 구성 기능수단(a, d, e, f)의 동작을 제어하는 셀 전송제어수단(g)과, 상기 각 기능수단(a, d, e, f, g)의 타이밍 제어를 위한 클럭신호를 발생하는 클럭신호제어수단(h)을 구비하는 것을 특징으로 하는 우선순위처리 및 헤더 변환기능을 가진 ATM 다중화 처리장치를 특징으로 한다.

Description

ATM 다중화 처리 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명에 따른 다중화 기능 처리장치의 구성도, 제3도는 ATM 셀 입력회로부의 세부구성도, 제6도는 우선 순위 엔코더 회로부 세부구성도, 제8도는 ATM 셀 출력회로 세부구성도.

Claims (6)

  1. 입력단에 존재하여 입력단에 들어오는 각 셀을 저장하는 기능과 셀의 일시적인 변위를 흡수, 제거하는 다수의 ATM 셀 입력수단(a)과 ATM 셀입력회로부(a)로 부터 각 입력버퍼(a2)에 저장된 셀의 갯수에 대한 저장레벨정보를 동시에 받아 각 입력버퍼에 송신 위해 대기중인 셀이 많은 입력단부로 부터 송신을 결정하는 우선순위 엔코더(d)와, 상기 우선순위엔코더(d)로 부터 보내온 셀의 헤더와 그 헤더가 속하는 입력포트번호를 가지고 변환헤드를 출력으로 발생하는 연결테이블처리수단(e)과, 상기 연결테이블처리수단(e)으로 부터 받은 변환헤더와 해당 연결정보를 보고 서비스 우선처리 순위에 따라 송신 순서를 정하며 완전한 셀을 만들기 위한 헤더 어셈블링 기능을 수행하는 ATM 셀 출력수단(f)과, 상기 ATM 셀 출력수단(f)에서 생성된 헤더를 송신하고, 해당 페이로드를 송신제어하며 상기 각 구성 기능수단(a, d, e, f)의 동작을 제어하는 셀 전송제어수단(g)과, 상기 각 기능수단(a, d, e, f, g)의 타이밍 제어를 위한 클럭신호를 발생하는 클럭신호제어수단(h)을 구비하는 것을 특징으로 하는 우선순위처리 및 헤더 변환기능을 가진 ATM 다중화 처리장치.
  2. 제1항에 있어서, 외부의 프로세서로부터 시스템 관리상 필요에 의해 OAM 셀과 신호용 셀의 페이로드를 저장하였다가 출력하는 ATM신호/OAM 셀 입력수단(b)을 더 포함하는 것을 특징으로 하는 ATM 다중화 처리장치.
  3. 제1항에 있어서, 상기 ATM 셀 입력수단(a)은, 입력단으로 부터 들어오는 셀의 흐름으로 부터 바이트클럭을 추출 및 셀동기를 잡고 셀헤더내의 오류가 존재하는지를 체크하며, 저장되는 셀의 바이트, 셀의 수를 카운터 하기 위한 신호를 발생하는 쓰기제어수단(a1)과, 상기 쓰기제어수단(a1)으로 부터 출력되는 헤더쓰기(HDR W*)신호에 의해 바이트 단위의 셀헤더를 분리저장하는 헤더 FIFO버퍼(a3)와, 상기 쓰기제어수단(a1)으로 부터 출력되는 페이로드쓰기(PY W*)신호에 의해 헤더를 떼어낸 페이로드를 저장하는 페이로드 FIFO 버퍼(a2)와, 상기 쓰기제어수단(a1)으로 부터의 페이로드쓰기(PY W*)신호에 따라 페이로드 FIFO 버퍼(a2)에 현재 저장된 셀의 수를 카운트하여 현재 저장된 FIFO 저장레벨 정보를 출력하는 FIFO 저장레벨 지시수단(a4)를 구비한 것을 특징으로 하는 ATM 다중화 처리장치.
  4. 제1항에 있어서, 상기 우선순위엔코더(d)는, 상기 ATM 셀 입려 수단(a)로부터 받은 각 입력버퍼내 저장된 셀 수에 대한 FIFO 저장레벨정보를 받아서 버퍼내 저장된 셀의 수가 많은 입력단의 버퍼에서 먼저 읽어 내는 것을 제어하는 우선순위결정수단(d1)과, 상기 우선순위결정수단(d1)에서의 결정된 순서에 따라 헤더를 읽어 들어오는 헤더 선택신호를 출력시키고 읽어온 헤더럴 연결테이블처리수단(e)으로 입력시키는 헤더입력시작신호, 헤더쓰기클럭 입력포트번호를 발생시키는 헤더 선택신호 발생수단(d2)과, 상기 헤더 선택신호발생수단(d2)의 출력신호에 따라 읽혀온 헤더들을 타이밍 정력하는 레지스터(d3)를 구비하는 것을 특징으로 하는 ATM 다중화 처리장치.
  5. 제1항에 있어서, 상기 연결테이블 처리수단(e)은, 상기 우선순위엔코더(d)로부터 헤더 버스를 통행 수신한 헤더 입력을 병렬처리하는 헤더 역다중화수단(e3)과 (e3)과, 상기 우선 순위엔코더(d)로 부터 헤더쓰기클럭, 헤더입력시작번호를 받아 상기 헤더 역다중화 수단(e3)의 헤더 병렬처리기능을 제어하는 테이블 헤더 입력제어수단(e1) 및 카운터(e2)와, 상기 헤더 역다중화 수단(e3)의 출력인 병렬화된 헤더를 타이밍 정렬하는 레지스터 에레이(e4)와, 상기 레지스터 에레이(e4)의 출력인 VPI/VCI와, 해당 입력포트번호에 대해 변환되는 VPI/VCI를 포함하여 서비스 우선순위의 연결정보를 출력하여 ATM 셀 출력회로부(f)로 보내는 연결정보저장수단(e5)와, 상기 연결정보저장수단(e5)의 새로운 연결설정으로 인한 테이블에 새로운 입력을 추가시키고 연결 해제로 인해 테이블에서 삭제하는 기능을 수행하는 연결테이블 관리수단(e6)을 구비하는 것을 특징으로 하는 ATM 다중화 처리장치.
  6. 제1항에 있어서, 상기 ATM 셀 출력수단(f)은, 상기 연결테이블 처리수단(e)으로부터 변환된 헤더와 해당 입력포트번호, 변환헤드쓰기신호를 받아 쓰기제어를 위한 주소지정과분류 시작신호를 발생시키는 분류부 쓰기제어수단(f1)와, 상기 분류부 쓰기제어수단(f2)로부터 수신한 변환헤더에 대한 서비스 우선순위에 따라 전송 순위를 분류하는 전송순위분류수단(f2)가, 상기 전송순위분류수단(f2)의 분류결과에 따라 순서대로 셀을 전송하기 위해 병렬헤더를 먼저 바이트 단위로 송신하는 헤더 다중화수단(f4)과, 상기 헤더 다중화수단(f4)에서 출력된 헤더에 대한 헤더에러수정(HEC)신호를 발생하여 송신하는 HEC 발생수단(f5)이고, 상기 전송순위분류수단(f2)으로부터 입력포트정보를 받아 전송헤더에 대한 페이로드를 연이어 전송하기 위한 출력버퍼를 지정하는 출력포트 지정수단(f3)과, 전송되는 헤더의 타이밍을 결정하는 헤더다중화를 제어하는 신호를 상기 헤더 다중화 수단(f4)로 제공하는 헤더송신제어수단(f6)를 구비하는 것을 특징으로 하는 ATM 다중화 처리장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920026122A 1992-12-29 1992-12-29 에이티엠(atm) 다중화 처리 장치 Expired - Fee Related KR960003505B1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019920026122A KR960003505B1 (ko) 1992-12-29 1992-12-29 에이티엠(atm) 다중화 처리 장치
US08/173,181 US5446738A (en) 1992-12-29 1993-12-28 ATM multiplexing system
JP5352755A JPH06268665A (ja) 1992-12-29 1993-12-29 Ａｔｍ多重化処理装置

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KR1019920026122A KR960003505B1 (ko) 1992-12-29 1992-12-29 에이티엠(atm) 다중화 처리 장치

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KR940017455A true KR940017455A (ko) 1994-07-26
KR960003505B1 KR960003505B1 (ko) 1996-03-14

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US (1) US5446738A (ko)
JP (1) JPH06268665A (ko)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980013823A (ko) * 1996-08-03 1998-05-15 구자홍 적응우선순위방식을 이용한 다중화방법
KR100223227B1 (ko) * 1996-11-30 1999-10-15 김영환 아이에스디엔용 림 보드의 다중화 장치

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